The SoundWire specification allows a Slave device to report a bus clash or parity error with the in-band interrupt mechanism. Unfortunately, on some platforms, these errors are randomly reported and don't seem to be valid. This series suggests the addition of a Master level quirk to discard such interrupts. The quirk should in theory have been added at the Slave level, but since the problem was detected with different generations of Slave devices it's hard to point to a specific IP. The problem might also be board-dependent and hence dealing with a Master quirk is simpler.
Bard Liao (2): soundwire: bus: clear bus clash interrupt before the mask is enabled soundwire: intel: add SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH quirk
Pierre-Louis Bossart (1): soundwire: bus: clear parity interrupt before the mask is enabled
drivers/soundwire/bus.c | 19 +++++++++++++++++++ drivers/soundwire/intel.c | 3 +++ include/linux/soundwire/sdw.h | 5 +++++ 3 files changed, 27 insertions(+)